Guide device



S FINDLATER GUIDE DEVICE Filed Nov. 24, 1936 w w NQ n W T y H w N H m 5N EW E Tv,

Patented Dec. 20, 1938` UNITED STATES GUIDE DEVICE Stevenson Findlater,McKecsport, Pa., assignor to National Tube Company, a corporation of NewJersey Application November 24, 1936, Serial No. 112,588

3 Claims.

This invention relates to rolling mills, and more particularly to guidedevices therefor.

In my co-pending application, Serial No. 100,535 filed September 12,1936, there is disclosed a guide device for rolling mills andparticularly those which roll seamless tubes. The device of the presentapplication is generally similar thereto but includes additionalelements which make for greater efliciency.

It is among the objects of the present invention to effectivelysectionalize rolling mill guide dcvices and provide for their elcientsupport as a -unitary structure; the sections being relatively small toeliminate the discard or interchange of l5 more than is necessary.

The foregoing and other objects will be apparent after referring to thedrawing, in which: The single figure ls a sectional elevation of thedevice of the invention as applied to a conventional type of seamlesstube mill. i-

Referring more particularly to the drawing, the numerals I and 2respectively designate the usual upper and lower chairs for the guidedevices which are customarily employed intermediate the metal-workingrolls of the mill.

According to the teaching of the invention, the upper chair I carries apair of horizontally extending pins 3 and 4l which are substantiallyspaced with respect to-each other. The pin 3, which is most adjacent theinlet end of'the mill, carries a movable bellcrank lever 5, one end ofwhich extends rearwardly and horizontally, as

shown at 6. One end of a vertically extending` shaft 1 is pivotallyconnected, as at 8, to the end shaft 1 is extended through an ear 9which is integrally formed on the upper chair I. This end of the shaft 1is screw-threaded to carry an ad- 4o justing nut I0 in contact with theear 9, whereby the bellcrank lever 5 may be partiallyrotated on the pin3. The other end of the bellcrank lever 5 extends downwardly, as shownat-'I2, and carries a lrearwardly extending lug I3, whose rearward faceI4 ismitered.

- The forward part ofthe upper guide element per se of the invention isshown at I5 as 'comprising a metallic segment which has forward andrearward mitered projections I6 and I1, respectively. This segment I 5is provided with a recess I8 whose forward wall is mitered, as shown atI8. An insert 20 is disposed in the recess I8 and has a forward miteredprojection 2I for contact with the mitered wall. I8 of the recess I8.Between the lower side of the recessed portion Il of (c1. sii-13) thesegment I5 and the upper side of the ,there is disposed a. liner 2I.

The forward mitered projection I6 of the segment I 5 is engaged by themitered face I4 on the bellcrank lever 5. The insert 20 also yhas arearward mitered projection 22 for a purpose to be later described. y

The rearward pin 4 on the upper chair I carries a bellcrank lever 25,one end of which extends rearwardly and horizontally, as shown at 26.One end of a vertically extending shaft 21 is pivotally connected, as at28, to the end 26 of the bellcrank lever 25. The other end of thevertical shaft 21 is extended through an ear 29 which is integrallyformed on the upper chair I. This end of the shaft 21 is screw-threadedto carryan adjusting nut 30 in contact with the ear 28, whereby thebellcrank lever 25 may be partially rotated on the pin 4. 'I'he otherend of the bellcrank lever 25 extends downwardly, as shown at 32, andcarries a rearwardly extending lug 33 whose rearward face 34 is mitered.

The rearward part of the upper guide element per se of the invention isshown at 35 as comprising a metallic segment which has upper and lowerforward mitered projections 36 and 31 respectively. The upper forwardmitered projection 36 is engaged by the mitered surface 34 Aon therearwardly extending lug 33 on the bellcrank lever 25. The lower forwardmitered projection 31 engages the rearward mitered projection 22 of theinsert 20 in the segment I5.

'Ihe segment 35 of the upper guide element per se also carries arearwardly extending mitered projection 38 which makes contact with aforward mitered projection 40 on the `upper chair I. f

Liners 43 are disposed between the upper chair I and theupper surfacesof the segments I5 and 35 to adjust the latter with respect to theho'rizontal center-line of the pass. `'I'his enables compensation forwear. i

The lower chair of the mill is arranged in sections, as shown at 2 and2, the former being mounted ona conventional vertical adjusting device.carries a pair of horizontally extending pins 53 and 54 which aresubstantially spaced with respect to each other. The pin 58, which -ismost adjacent the inlet end of the mill, carries an intermediatelypivoted vertically extending lever 55. The vertically extended end 56 ofthe lever carries a rearward horizontally extending lug .51, therearward face of which is mitered, as

shown at 58. The downwardly extending end 58' insert 20 Thev forwardsection 2 of the lower chair u Cal of the vertical lever 55 carries apin 60 to which there is connected the one end of a forwardly extendingrod 6|. The other end of the forwardly extending rod 6| extends out ofthe forward section 2 of the lower chair and carries an enlarged washer62 and an adjusting nut 63. The adjusting nut 63 engages the enlargedwasher 62 and enables the movement of the forwardly extending rod 6 I.

The forward part of the lower guide element per se is shown at 65 ascomprising a metallic segment which has forward and rearward miteredprojections 66 and 61 respectively. This segment 65 is provided with arecess 68 whose forward wall is mitered, as shown at 69. An insert isdisposed in the recess 68 and has a forward mitered projection 1| forcontact with the mitered wall 69 of the recess 68. Between the upperside of the recessed portion 68 of the segment 65 and the lower side ofthe insert 10 there is disposed a liner 1|a. The forward miteredprojection 66 of the segment 65 is engaged by the mitered face 58 on thevertical lever 55. The insert 10 also has a rearward mitered projection12 for a purpose to be later described.

The rearward pin 54 on the forward section 2 of the lower chair carriesa vertically extending lever whose upper end 16 has a rearwardlyextending lug 11. The rearward face of this lug 11 is mitered, as shownat 18. A pin 80 is carried on the intermediate portion of the verticallever 15 for supporting one end of a rearwardly extending rod 8|, theother of which extends through and out of the rearward section 2a of thelower chair.

The rearward part of the lower guide element is shown as comprising ametallic segment 85 which has upper and lower forward miteredprojections, 86 and 81, respectively. The upper forward miteredprojection 8'6 engages the rearward mitered projection 12 on the insert10, while the lower forward mitered projection-81 makes contact with themitered face 18 on the vertically extending lever 15. This segment 85also carries a rearwardly extending mitered projection 88 which makescontact with a forward mitered projection 89 on the forward section 2 ofthe lower chair.

Immediately below the position where the extended end of the rod 8|emerges form the rearward section 2a of the lower chair there isdisposed an ear 9| on which there is mounted a pin 92. A verticallyextending clamp 93 is connected to this pin 92. The upper end of theclamp 93 carries a forwardly extending lug 95 whose forward face ismitered, as shown at 96. The end of the rod 8| which extends through theclamp 93 carries an adjusting nut |00.

The upper surface of the rearward section 2a of the lower chair carriesa secondary guide element |02 in the form of a plug trough. Thissecondary guide element |02 has an intermediate downwardly extendingportion |04 which carries a forwardly extending mitered projection |05.This mitered projection |05 makes contact with an rearwardly miteredprojection |06 on the section 2"L of the lower chair.

The guide element |02 also carries a downwardly and rearwardly extendinglug |01 whose rearward face |08 is mitered for contact with the miteredface 96 of the lug 95 on the clamp 93.

Liners H4, |I3 and ||2 are disposed between the sections 2 and 2 of thelower chair, and the `lowr surfaces of theA respective elements 65, 85

and 02, to adjust them with respect to the horizontal center line of thepass.

It is to be noted that the segments |5 and 65, inserts and 10 andsegments 35 and 85 are identical and therefore interchangeable, wherebycomplexity is avoided.

While I have shown and described one specific embodiment of myinvention, it will be understood that I do not wish to be limitedexactly thereto, since various modifications may be made withoutdeparting from the scope of my invention, as dened by the followingclaims.

I claim l. 'Ihe combination with an axial tube rolling mill of upper andlower oppositely disposed workpiece guide devices disposed intermediatethe metal work rolls, comprising a pair of oppositely disposed supports,a stationary guide element in each of said supports, means for holdingsaid guide elements in contact with their respective supports, a secondstationary guide element in each of said supports, means for moving saidsecond named guide elements towards the said rst named guide elementsand an insert carried by each of the said second named guide elements,said inserts being constructed and arranged to be rigidly held inposition within their respective guide elements and against said firstnamed guide elements by moving said .second named guide elements towardthe said first named guide elements.

2. The combination with an axial tube rolling mill of upper and loweroppositely disposed Workpiece guide devices disposed intermediate themetal-working rolls comprising a pair of oppositely disposed supports,means for holding said guide elements in contact with their respectivesupports, a second stationary guide element in each of said supports,means for moving said second named guide elements towards the said firstnamed guide elements, and an insert carried by each of the said secondnamed guide elements, said inserts being constructed and arranged to berigidly held in position within their respective guide elements andagainst the said first named guide elements by moving said named guideelements toward the said first named guide elements, the contactingsurfaces of said inserts and said first and second named guide elementsbeing mitered. v

3. The combination with an axial tube rolling mill of a stationarywork-piece guide device disposed intermediate the metal-working rollscomprising a support, a stationary guide element. means for holding saidguide element in contact with said support, a second stationary guideelement, means for moving said second-named guide element towards saidrst named guide element. and an insert carried by said second-namedguide element, said insert being constructed and arranged to be rigidlyheld in position on said second named guide element and against said:drst named guide element by moving said second named guide elementtoward the rst named guide element, the contacting surfaces of saidinsert and said first and second named guide elements being mitered.

STEVENSON FINDLATER.

